Materials Literature
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The porous polyamide(PA)membranes with different structure were prepared using phase-inversion technique by controlling the temperature of solvent evaporation.The morphologies and mechanical properties of the porous membrane were characterized by SEM and universal mechanical testing machine.The cytological properties…
The corrosion failure occurred in certain welding pipeline used to transport crude oil. Through macroscopic examination, it found that the weld reinforcement of butt protruded greatly between elbow and straight pipe, 14 mm coal tar blocked in the elbow, the pipe wall of the elbow downstream reduced and local perforati…
Objective To review the analysis of the chemical composition, structural characteristics, extraction process and research progress of mulberry fiber. Methods Chemical method and biological method are the most frequently used methods for extraction of mulberry fiber. Results Compared with other paper making raw materia…
Al2O3/ZrO2 metal-ceramic compound die materials were fabricated with hot-pressing sintering technique by using micro Al2O3, ZrO2, W, Cr, Ni and Co as raw materials. The properties of relative density, bending strength, fracture toughness and hardness were tested and analyzed. Results show that when the contents of mic…
SAPO-34 molecular sieve with the uniform particle size,good dispersion and different morphologies was compounded at 180 ℃ for 4 days by adopting hydrothermal synthesis with Al(OPri)3,H3PO4,TEOS as the reaction material,TEA as the temple.The products were characterized by XRD,SEM and TG.The crystal morphology changed s…
Objective To Study the design and material selection of envelope packaging composite materials. Methods The function mechanism of envelope packaging was briefly introduced, the moisture barrier property, usability, environmental suitability and manufacturability were analyzed, the influencing factors on moisture barri…
PAMAM is one of more widely studied dendrimer along with non-immunogenicity and nongenotoxicity. PAMAM as gene vector has the high transfection efficiency,the low toxicity and wide applicability, which exhibits a good application prospect in gene therapy. With surface groups modification,the positive charge on the sur…
Taking Baiyunebo tailing,blast furnace slag and fly ash as the main raw materials,using the melting method,composite slag glass-ceramics was obtained. The effect of CaF2 adding quantity on structure and mechanical properties of composite slag glass-ceramics was studied by using modern analysis method of DTA,XRD,SEM an…
As the lightest engineering material,magnesium alloy shows important role in the industry.According to the research status of the application of boron and rare earth in the magnesium alloy,the mechanical properties of magnesium alloy were discussed from the effects of boron and rare earth on the magnesium alloy separa…
Extraction conditions of collagen from the skin of Jumbo flying squid( Dosidicus gigas) were optimized and the main features of the collagen were characterized. Effects of different extration factors on collagen were studied using single-factor experiments and response surface methodology. The optimal conditions were…
Because the bending rigidity of inlay yarns in the axial fabric has great impact on the 3-D forming property of the fabric,KES-F hand tester was used to characterize the bending rigidity of 4 kinds of common high performance yarns by measuring their maximum bending moments and fitting slopes. The experimental results…
The dehydrogenation performance of Pt-Sn-K /γ-Al2O3 catalysts during the isobutane dehydrogenation-in-situ regeneration cycles was investigated.The catalysts were characterized by N2 physisorption,CO pulse chemisorption,NH3temperature-programmed desorption and thermogravimetry,and their deactivation reasons were propo…
To get the initiation rule of jet impacting on a typical insensitive ammunition,theory of jet penetrating composite target and Held initiating criterion were applied to establish the theoretical model of jet impact initiating the insensitive ammunition. Based on analyzing shell and charge of the ammunition in existenc…
Graphene was a new halogen free,environment-friendly flame retardant with low toxicity,high efficiency,low loading,which showed a wide perspective of application in the field of polymer flame retardant modification.The latest research of the polymer modified with graphene,graphene-flame retardants system,functional gr…
A novel carbon based composite counter electrode with diffusely-distributed aluminum particles was fabricated as base catalytic film of counter electrode,and the influence of the catalytic film thickness on photoelectric properties of the assembled dye-sensitized solar cells(DSC)and the function mechanism of the alumi…
The influence of surface carbon content and heat treatments on15CrNi4Mo steel were analyzed in this paper. The microstructures and hardness of the materials were characterized by optical microscope. Results show that the hardness of the surface carbon content 0. 9wt% of15CrNi4Mo steel during quenching at 805℃ and temp…
In order to provided scientific evidence for establishing technological procedures to protect and preserve silk relics,the aging rate aging and degree of silk fabrics under different temperature and humidity conditions was analyzed. Silk fabrics were treated under high temperature( 75 ℃,100 ℃,125 ℃ and 150 ℃) low humi…
The self-healing microcapsules for composites were prepared and the preparation process was studied by electron microscopy analysis.The structure of microcapsules were characterized by infrared spectroscopy.The microcapsules and vinyl ester resin were complexed and the mechanical properties of the system were tested.T…
Two kinds of core-shell nanoparticles Fe3O4@SiO2and Fe3O4@mSiO2 whose magnetic kernels were high-dispersed Fe3O4nanoparticles were prepared and characterized in detail by TEM,FTIR and N2adsorption-desorption.The results showed that oil adsorption capacity of material 2which was in mesoporous structure for diesel oil a…
With increasing serious environmental pollution and consumption of non-renewable resources,the utilization of recyclable,low cost and biodegradable material in composites has become the world's hot topic. Natural fiber reinforced composites have received great attention in recent years. This paper presented an overvie…